Aux pumps-336

[John C. Noone]

Can anyone tell me if my aux pumps will work with aux tanks for restart in my 336 if I run out main and switch to Aux.
Thanks---this is a great site and has been extremely helpful

[Ernie Martin]

If it's like early 337's the answer is NO, and I put it in capital letters because errors here could be life threatening. Your POH should have a diagram of the fuel system. Make sure it's for the optional model with aux tanks. Then look to see in the diagram whether the aux pumps can be fed from the aux tanks. My guess is NO. Another way to check is this: on the ground put one tank on aux, with the throttle and mixture full fwd turn on the aux pump, see if the fuel-flow guage shows that there is flow, reduce throttle to cracked-open and try to start the engine.

If the 336 and early 337's are similar -- and they may well be -- you might find it useful to review the Fuel Management page in my "backup" website (www.SkymasterUS.com) which has important tips, diagrams of the fuel system, things NOT to do, and a quizz at the end (with answers).

Ernie

[John C. Noone]

Thanks so much for the info Ernie. I found the site on
fuel management and it was extremely helpful. I appreciate
your time. I am looking forward to meeting fellow
skymaster pilots to talk with. Thanks again as I love
my 336.

No the ax pumps only work on the main tanks